Add a test for lambda interpretation; begin organizing tests
Add a test for applying a lambda expression
Parse a lambda expression
A couple parsing tests that were missing
Code & test for parsing application to anonymous lambda
Evaluate returns Value instead of number
Test evalaute lambda + apply lambda
Test for symbol in the function application position
todo: error handling
some commenting
Merge branch 'rewind-slow-down'; ditch previous master

Conflicts:
	workspace.rkt